Smoke diluting and draft inducing apparatus



April 12, 1932. c coppus 1,853,336

SMOKE DILUTING AND DRAFT INDUCING APPARATUS Filed Aug. 4, 1930 2 Sheets-Sheet 1 April 12, 1932. F. H. c. COPPUS -1,853,336

SMOKE DILUTING AND DRAFT INDUCING APPARATUS 7 Filed Aug. 4, 1930 2 Sheets-Sheet 2 Ina e766)?" 5/ 0. Cop mas.

FIG. 6- AOM@M Patented Apr. 12, 1932 UNITED. STATES PATENT OFFICE.

FRANS H. O; COPPUS, OF WORCESTER, MAS'SAGHUSETTS, 'ASSIGNOR TO -ANNA M. C.

WECHSBERG, VERA L. WOOD, AND

GHUSETTS, AS TRUSTEES FRANS C. COPP'US, ALL OF WORCESTER, MASSA- sMOKE DILUTING AND DRAFT IND'UCING APPARATUS Application filed August 4, 1930; Serial No. 473,066;

This. invention relates to an equipment for inducing: draft through the locomotive fur? nace and for conducting the products of combustion from the stacks of locomotives and discharging them into the atmosphere,-but is capable of general use, particularly certain partsof it. In railroad yards where engines are kept under steam; and move about there is always much smoke, but when an engirls is being drafted startingwith a fresh fire, black smoke emanates from the stack for a short period of time; This is particularly the case when anengine is being drafted by meansofan exhauster instead of by means of steamwhich discolors the smoke. When several enginesv are thus being drafted 1 and grouped closely together as in a roundhouse or on special tracks outside of the roundhouse, the smoke is concentrated in a comparatively small area, and while the smoke thus madeis only a very .small portion of the totalsmoke in the railroad yard, itis localizedandoften objection is made toit.

The main object of this invention is to dilute the-smoke by providing an exhauster which. not only furnishes a draft for the l'ocomotivebut at the same time draws in air from either the inside or the outside of the V roundhouse so that the gases of combustion are mixed with diluting air and the mixture discharged at high velocity from the exhauster and thereby diffused, or discharged through a large number of small orifices. In the latter case it may'not always be necessary to dilute the gases with air, depending upon the number and size of orifices and their distance apart. V I

Other objects and advantages of the invention will appear hereinafter. e

7 Reference is to be had to the accompanying drawings, in which V I Fig. 1 is anelevational vie'w, partly in secloco'motive stack; 7

.Fig. 2 is a sectional view .on therline 2-2 of Fig'l; 7

Fig. is a plan view of themixer: of Fig. 1; v igAis a dia'metrical sectional view of a modification of the exhauster;

tion, of a preferred form of the apparatus showing the uptake pipe in position over the.

Fig. 5 is a side view of another modification using the centrifugal type of exhauster;

Fig. (dis a side View of a discharge pipe 50 which may be connected to the outlet of either Fig. 1, Fig. i or Fig. 5;

Fig. 7 is a side view showing a lIlOClifiCiL- ,within the frame 3. It is shown as'taking products of combustion from a telescoping,

jack. The inlet casing 1 is provided with an inner casing connected to the outer wall of the casing by tubes 5 conductingwc'ooling' air to the inner casing 4' in "which the motor 6 of the exhauster extends. The motor frame 1 is supportedby ribs 7 from the exhaust casing 8. Thefan 9 of the exhauster is fastened to the end of the shaft'of the motor and. discharges into a mixing casing 10; 5 The inlet casing 1 below the tubes 5 is provided with slots 11, Fig. 2., and a-shutter 12 having correspondingisl'otsl3 surrounding the lower part of easing 1 and be moved by'means of a wheel 14:, pinion'15 and rack 16 so as to control the amount of air'taken from the outside of the roundhouse into the exhauster;

To the plate2 is connected the gas intake 17 from the locomotive stack which may be of any type. The plate 2 also is provided with radial slot-s 18 and has ashutter-l9 with corresponding .slotsr20 so that when the shutter is open, air from the roundhouseis drawn intol-the casing thereby ventilating the roundhouse, but when closed only outside air is' taken intothecasingl thereby keeping the heat in the roundhouse when desired.

gases on the inlet. side of the exhaust fan, whereby the inlet casing! becomes'ia mixing casing, at the same time helping outthe mixer 'ing into the casing 1 for varying distances so that the dilutingair' is mixed with the at the discharge end of the fan, or making it unnecessary.

Instead of fastening the exhauster to a plate 2, as shown in Fig. 1, it may be used as a portable blower and put on top of a locomotive stack on engines in the yard or suitably supported from an I-beam or rail as shown in my Patent No. 1,669,455, issued May 15, 1928.

In Fig. 4-the exhauster has a casing 25 which may be connected to the plate 2 of Fig. 1. Inside of this casing is spaced :1 casing 26 being connected with the casing 25 by arms 27 and by a tube 28, providing cooling air for the motor 29 within the casing 26. A fan 30 is fastened to the end of the motor shaft and handles the gases of combustion and the cooling air. Around the upper part of the casing 25 is another casing 31 fastened to the casing 25 by arms 32 thus forming an annular air intake 38, the suction being created by the velocity of the gases passing through the fan 30. The diluting air does not pass through the exhaust fan but is drawn in by the velocity of the gases of combustion. A mixer like that shown in Fig. 3, or of any other form, can be attached to the discharge of the exhauster to mix the gases with the air.

In Fig. 5 the exhauster has a casing with an inlet 41 to which is connected the gas uptake 42 and an inlet 43 which is open to the atmosphere and preferably provided with a shutter (not shown) so as to control the amount of diluting air. The fan is driven by a motor 44 and has a bearing 45 for the other end of the fan shaft. The gasesot' combustion enter on one side and the diluting air on the opposite side, a mixer (not shown) to be applied to the discharge side of the exhauster for mixing the air with the gases.

'The outlet stackshown in Fig. 6 is provided with a flange 51 at the bottom to be bolted to the outlet flange of either exhauster shown in Fig. 1, Fig. 4 or Fig. 5, with or without a mixer, and in such case the gases are put under pressure inside of the stack and discharged through holes 52 and a comparatively small outlet 53 at the top.

In the modification shown in Fig. 7 the usual smoke .jaek 55 of the roundhouse is utilized. In this case the products of combustion are discharged into the smoke jack by means of an exhauster placed on top of the smoke stack of a locomotive or by means of steam discharged through the smoke stack. An exhauster 57 is placed on top of the smoke jack. This exhauster has double inlet damp- 2 er 58 which is closed when the exhauster is not in operation. The top of the smoke jaekis provided with side dampers 59 whichnormal- 1y hang open when the exhau'ster is not in operation and through which the gases from an engine standing under the jack are emitted, but when'the exhauster57 is in operation the dampers 59 are wholly or partly closed by the suction created by the exhau ster. The dampers 59 may be held partly open by providing stops consisting of links 00 operated by a crank disc 61. In the position of the links shown in dotted lines, the dampers can close entirely and when the crank disc is turned 90 the dampers 59 are held open as far as possible. The'crank disc 61 may be operated by means of a rod 62. Therefore, not only the products of combustion discharged into the smoke jack will be discharged into the atmosphere by the exhauster 57, but air from the roundhouse, of course, will be drawn in with it, thereby diluting the products of combustion and also any air from the outside which is permitted to enter through the dampers 59. The outlet stack shown in Fig. 6 may, of course, be connected to the outlet of the exhauster 57 directly or to a mixer connected to the outlet of the exhauster.

The modification shown in Fig. 8 does not vary in principle from that shown in Fig. 7 the difference merely being that a centrifugal exhauster (i5 is used, placed to the side of the jack, and that the top of the jack is provided with a damper which may be controlled similarly to the dampers 59 in Fig. 7.

Certain elements and combinations are shown, but not claimed herein, because they are claimed in my copending divisional application, Serial No..180,018, filed March 31, 1927, and the combination between the dampers 58 and 59 in 7 is not vclaimed herein, as it is claimed in my co-pending application, Serial No. 587,736, filed Jan. 20,1932.

Although I have illustrated and described several forms of the invention I am aware of the fact that modifications may be made therein by any person skilled in the art without 14:5

departing from the scope of the invention as expressed in the claims. Therefore I do not wish. to be limited in this respect but what I do claim is 1. Ina roundhouse equipment, the combi- 111:,

nation of an exhauster, means for conducting products of combustion to the exhauster and means for introducing air into said products for the purpose of discoloring them.

2. In a roundhouse equipment, the combi- 12.

nation of an exhauster, means for conducting products of combustion to the exha-uster and means for diluting said products with air taken from the inside of the roundhouse for the purpose of discoloring said products.

3. In a roundhouse equipment, the combination of an exhauster, means for conducting products of combustion to the-exhauster and means for diluting said products with air the purpose of discoloring said products.

4. In a roundhouse equipment, the combination of an exhauster, means for conducting products of combustion to the exhauster taken from the outside of the roundhouse for n:

and means for diluting said products with air taken from the inside and outside of the roundhouse for the purpose of discoloring said products.

5. In a. roundhouse equipment, the combination of an exhauster, means for conducting products of combustion to the exhauster, means for inducing air from the inside'of the roundhouse into the exhauster, and means for dispersing the mixture into the atmosphere outside the roundhouse.

6. In a roundhouse equipment, the combination of an exhauster, means for conducting products of combustion to the exhauster, means for inducing air from the outside of the roundhouse into the exhauster, and means for dispersing the mixture into the atmosphere outside the roundhouse.

7. In a roundhouse equipment, the combination of an exhauster, means for conducting products of combustion to the exhauster,

means for inducing air from the inside and outside of the roundhouse into the exhauster, and means for dispersing the mixture into the atmosphere outside the roundhouse.

8. In a roundhouse equipment, the combination of an exhauster, means for conducting products of combustion to the exhauster and means at the discharge end of the exhauster for discharging the products of combustion through a large number of small orifices.-

9. In a roundhouse equipment, the combi- V nation of an exhauster, means for conducting products of combustion to the exhauster, means for inducing air from the inside or outside of the roundhouse into the exhauster,

means for mixing said air with the products of combustion and means for discharging the mixture through a large number of small orifices.

10. Ina roundhouse equipment, the combination with a smoke jack, of an exhauster connected to said jack to conduct products of combustion therefrom and means for di-- luting said products of combustion with air from the inside of the roundhouse.

11. In a roundhouse equipment, the combination with a smoke jack, of an exhauster connected to said jack to conduct productsof combustion therefrom and means for diluting said products with air taken from the outside of the roundhouse; I

12; In a roundhouse equipment, thecombination with a smoke jack, of an exhauster connected to said jack to conduct products of combustion therefrom diluted with air from the inside of the roundhouse and'means for;

inducing air from the outside of the roundhouse into the exhauster.

13. In a roundhouse equipment, the combination with a smoke jack, of an exhauster connected to saidjack to conduct products of combustion therefrom and means for discharging said products ber of small orifices. v

14. In a roundhouse equipment, the comthrough a large numbination with a smoke jack, of an exhauster connected to said jack to conduct products of combustion therefrom, means for diluting said products with air taken from the outside of the roundhouse, and means fordischarging said products and diluting air through a large number of small orifices.

15. In a roundhouse equipment, the com binationiwith a smoke jack, of an exhauster 7 nation of an exhauster. means for conducting products of combustion to the exhauster, means for diluting said products with air for the purpose of discoloring said products and means for dispersing the mixture into the atmosphere outside of the roundhouse.

18. In a locomotive drafting equipment, the combination of an exhauster for con ducting products of combustion from the stack of a locomotive, means for connecting the exhauster to a locomotive stack, means for inducing air into the exhauster for dilut- .ing the products of combustion, and means for dispersing the mixture into the atmosphere outside of the roundhouse.

19. In a locomotive drafting equipment, the combination of an exhauster for conducting products of combustion from the stack of a locomotive, means for connecting the exnauster to a locomotive stack, means for diluting the products of combustion with air for the purpose of discoloring said products,

and means for dispersing the mixture into the atmosphere outside of the roundhouse.

20.-The method of drafting a locomotive which consists in exhausting the products of combustion and introducing air intothem for the purpose of discoloring them.

In testimony whereof I have hereto aiiixed my signature.

FRANSH. C. COPPUS. 

